They have had a rocky relationship since Barr said that the DOJ had found no evidence of widespread fraud in the election. I do not know if he just resigned or if he was asked to.
It's not over yet, gonna be a bumpy ride until Jan 20th. You may not believe it and say it isn't so, but just because you say, doesn't make it so. Good luck to all.....
Barr is likely leaving because Trump was on him for not disclosing before the election that Hunter was under investigation. It's not good for the justice process to disclose that information. I'm sure he's tired of always being under fire from either the media or Trump. He probably doesn't think he has much left to do anyway.